A system and method includes acquisition of one or more images of each of a plurality of bodies, each of the images associated with an acquisition time, determination, for each body, of a future health status of the body, the future health status of the body being a health status of the body at a time after the acquisition time of the one or more images of the body, and training of an artificial neural network to output a predicted health status, the training based on the one or more images and determined future health status of each body.